The amount of time it takes for the revenue generated by a new customer to recover the cost spent acquiring them (CAC), typically expressed in months.
Why it matters
CAC payback period is one of the clearest efficiency signals for a growth business — a shorter payback period means capital spent on acquisition is recovered and available to reinvest sooner, which materially affects how fast a company can responsibly scale spend.
In a sentence
"Our blended CAC payback period is under six months, which gives us real confidence to lean harder into paid acquisition."
Related terms
- Often confused with: LTV/CAC ratio (a related but distinct efficiency measure — payback period is about time to break even; LTV/CAC ratio is about total lifetime return relative to acquisition cost, regardless of how long it takes).